Are Open Models Catching Up?

Open source AI models are closing the capability gap with closed frontier models faster each generation, with recent models like GLM 5.3 and Kimi K3 matching many tasks of leading closed models at far lower cost, intensifying competition beyond OpenAI and Anthropic. The open vs closed model gap evolves cyclically as frontier research gets reverse-engineered and replicated more quickly, challenging frontier labs' margins but expanding token market opportunities.

This Wire brief sits within Fusion42's coverage of AI Frontier Models and Generative AI.